12x - 3 = 8x + 9
12x - 3 = 8x + 9 solution is x=3
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Updated 6/5/2014 6:19:27 PM
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12x - 3 = 8x + 9

12x - 8x = 9 + 3

4x = 12

x = 12/4

x = 3
Confirmed by debnjerry [6/5/2014 6:34:48 PM]

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8x + 3 = 7x - 2
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Updated 6/5/2014 6:18:05 PM
8x + 3 = 7x - 2

8x - 7x = -2 - 3

x = -5
Confirmed by debnjerry [6/5/2014 6:35:09 PM]
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